initial libretro port

[picodrive.git] / pico / pico.h

/*\r
 * PicoDrive\r
 * (c) Copyright Dave, 2004\r
 * (C) notaz, 2006-2010\r
 *\r
 * This work is licensed under the terms of MAME license.\r
 * See COPYING file in the top-level directory.\r
 */\r
\r
#ifndef PICO_H\r
#define PICO_H\r
\r
#include <stdlib.h> // size_t\r
\r
// port-specific compile-time settings\r
#include <port_config.h>\r
\r
#ifdef __cplusplus\r
extern "C" {\r
#endif\r
\r
// message log\r
extern void lprintf(const char *fmt, ...);\r
\r
// external funcs for Sega/Mega CD\r
extern int  mp3_get_bitrate(void *f, int size);\r
extern void mp3_start_play(void *f, int pos);\r
extern void mp3_update(int *buffer, int length, int stereo);\r
\r
// this function should write-back d-cache and invalidate i-cache\r
// on a mem region [start_addr, end_addr)\r
// used by dynarecs\r
extern void cache_flush_d_inval_i(void *start_addr, void *end_addr);\r
\r
// attempt to alloc mem at specified address.\r
// alloc anywhere else if that fails (callers should handle that)\r
extern void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed);\r
extern void *plat_mremap(void *ptr, size_t oldsize, size_t newsize);\r
extern void  plat_munmap(void *ptr, size_t size);\r
\r
// this one should handle display mode changes\r
extern void emu_video_mode_change(int start_line, int line_count, int is_32cols);\r
\r
// this must switch to 16bpp mode\r
extern void emu_32x_startup(void);\r
\r
// optional 32X BIOS, should be left NULL if not used\r
// must be 256, 2048, 1024 bytes\r
extern void *p32x_bios_g, *p32x_bios_m, *p32x_bios_s;\r
\r
// Pico.c\r
#define POPT_EN_FM          (1<< 0) // 00 000x\r
#define POPT_EN_PSG         (1<< 1)\r
#define POPT_EN_Z80         (1<< 2)\r
#define POPT_EN_STEREO      (1<< 3)\r
#define POPT_ALT_RENDERER   (1<< 4) // 00 00x0\r
#define POPT_6BTN_PAD       (1<< 5)\r
// unused                   (1<< 6)\r
#define POPT_ACC_SPRITES    (1<< 7)\r
#define POPT_DIS_32C_BORDER (1<< 8) // 00 0x00\r
#define POPT_EXT_FM         (1<< 9)\r
#define POPT_EN_MCD_PCM     (1<<10)\r
#define POPT_EN_MCD_CDDA    (1<<11)\r
#define POPT_EN_MCD_GFX     (1<<12) // 00 x000\r
#define POPT_EN_MCD_PSYNC   (1<<13)\r
#define POPT_EN_SOFTSCALE   (1<<14)\r
#define POPT_EN_MCD_RAMCART (1<<15)\r
#define POPT_DIS_VDP_FIFO   (1<<16) // 0x 0000\r
#define POPT_EN_SVP_DRC     (1<<17)\r
#define POPT_DIS_SPRITE_LIM (1<<18)\r
#define POPT_DIS_IDLE_DET   (1<<19)\r
#define POPT_EN_32X         (1<<20)\r
#define POPT_EN_PWM         (1<<21)\r
extern int PicoOpt; // bitfield\r
\r
#define PAHW_MCD  (1<<0)\r
#define PAHW_32X  (1<<1)\r
#define PAHW_SVP  (1<<2)\r
#define PAHW_PICO (1<<3)\r
#define PAHW_SMS  (1<<4)\r
extern int PicoAHW;            // Pico active hw\r
extern int PicoSkipFrame;      // skip rendering frame, but still do sound (if enabled) and emulation stuff\r
extern int PicoRegionOverride; // override the region detection 0: auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe\r
extern int PicoAutoRgnOrder;   // packed priority list of regions, for example 0x148 means this detection order: EUR, USA, JAP\r
extern int PicoSVPCycles;\r
void PicoInit(void);\r
void PicoExit(void);\r
void PicoPower(void);\r
int  PicoReset(void);\r
void PicoLoopPrepare(void);\r
void PicoFrame(void);\r
void PicoFrameDrawOnly(void);\r
extern int PicoPad[2]; // Joypads, format is MXYZ SACB RLDU\r
extern void (*PicoWriteSound)(int bytes); // called once per frame at the best time to send sound buffer (PsndOut) to hardware\r
extern void (*PicoMessage)(const char *msg); // callback to output text message from emu\r
typedef enum { PI_ROM, PI_ISPAL, PI_IS40_CELL, PI_IS240_LINES } pint_t;\r
typedef union { int vint; void *vptr; } pint_ret_t;\r
void PicoGetInternal(pint_t which, pint_ret_t *ret);\r
\r
// cd/Pico.c\r
extern void (*PicoMCDopenTray)(void);\r
extern void (*PicoMCDcloseTray)(void);\r
extern int PicoCDBuffers;\r
\r
// pico.c\r
#define XPCM_BUFFER_SIZE (320+160)\r
typedef struct\r
{\r
	int pen_pos[2];\r
	int page;\r
	// internal\r
	int fifo_bytes;      // bytes in FIFO\r
	int fifo_bytes_prev;\r
	int fifo_line_bytes; // float part, << 16\r
	int line_counter;\r
	unsigned short r1, r12;\r
	unsigned char xpcm_buffer[XPCM_BUFFER_SIZE+4];\r
	unsigned char *xpcm_ptr;\r
} picohw_state;\r
extern picohw_state PicoPicohw;\r
\r
// area.c\r
int PicoState(const char *fname, int is_save);\r
int PicoStateLoadGfx(const char *fname);\r
void *PicoTmpStateSave(void);\r
void  PicoTmpStateRestore(void *data);\r
extern void (*PicoStateProgressCB)(const char *str);\r
\r
// cd/buffering.c\r
void PicoCDBufferInit(void);\r
void PicoCDBufferFree(void);\r
void PicoCDBufferFlush(void);\r
\r
// cd/cd_sys.c\r
int Insert_CD(const char *cdimg_name, int type);\r
void Stop_CD(void); // releases all resources taken when CD game was started.\r
\r
// Cart.c\r
typedef enum\r
{\r
	PMT_UNCOMPRESSED = 0,\r
	PMT_ZIP,\r
	PMT_CSO\r
} pm_type;\r
typedef struct\r
{\r
	void *file;		/* file handle */\r
	void *param;		/* additional file related field */\r
	unsigned int size;	/* size */\r
	pm_type type;\r
	char ext[4];\r
} pm_file;\r
pm_file *pm_open(const char *path);\r
size_t   pm_read(void *ptr, size_t bytes, pm_file *stream);\r
int      pm_seek(pm_file *stream, long offset, int whence);\r
int      pm_close(pm_file *fp);\r
int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize,int is_sms);\r
int PicoCartInsert(unsigned char *rom, unsigned int romsize, const char *carthw_cfg);\r
void PicoCartUnload(void);\r
extern void (*PicoCartLoadProgressCB)(int percent);\r
extern void (*PicoCDLoadProgressCB)(const char *fname, int percent);\r
extern int PicoGameLoaded;\r
\r
// Draw.c\r
// for line-based renderer, set conversion\r
// from internal 8 bit representation in 'HighCol' to:\r
typedef enum\r
{\r
	PDF_NONE = 0,    // no conversion\r
	PDF_RGB555,      // RGB/BGR output, depends on compile options\r
	PDF_8BIT,        // 8-bit out (handles shadow/hilight mode, sonic water)\r
} pdso_t;\r
void PicoDrawSetOutFormat(pdso_t which, int allow_32x);\r
void PicoDrawSetOutBuf(void *dest, int increment);\r
void PicoDrawSetCallbacks(int (*begin)(unsigned int num), int (*end)(unsigned int num));\r
extern void *DrawLineDest;\r
extern unsigned char *HighCol;\r
// utility\r
#ifdef _ASM_DRAW_C\r
void vidConvCpyRGB565(void *to, void *from, int pixels);\r
#endif\r
void PicoDoHighPal555(int sh);\r
extern int PicoDrawMask;\r
#define PDRAW_LAYERB_ON      (1<<2)\r
#define PDRAW_LAYERA_ON      (1<<3)\r
#define PDRAW_SPRITES_LOW_ON (1<<4)\r
#define PDRAW_SPRITES_HI_ON  (1<<7)\r
#define PDRAW_32X_ON         (1<<8)\r
// internals\r
#define PDRAW_SPRITES_MOVED (1<<0) // (asm)\r
#define PDRAW_WND_DIFF_PRIO (1<<1) // not all window tiles use same priority\r
#define PDRAW_SPR_LO_ON_HI  (1<<2) // seen sprites without layer pri bit ontop spr. with that bit\r
#define PDRAW_INTERLACE     (1<<3)\r
#define PDRAW_DIRTY_SPRITES (1<<4) // (asm)\r
#define PDRAW_SONIC_MODE    (1<<5) // mid-frame palette changes for 8bit renderer\r
#define PDRAW_PLANE_HI_PRIO (1<<6) // have layer with all hi prio tiles (mk3)\r
#define PDRAW_SHHI_DONE     (1<<7) // layer sh/hi already processed\r
#define PDRAW_32_COLS       (1<<8) // 32 column mode\r
extern int rendstatus, rendstatus_old;\r
extern int rendlines;\r
extern unsigned short HighPal[0x100];\r
\r
// draw.c\r
void PicoDrawUpdateHighPal(void);\r
void PicoDrawSetInternalBuf(void *dest, int line_increment);\r
\r
// draw2.c\r
// stuff below is optional\r
extern unsigned char  *PicoDraw2FB;  // buffer for fast renderer in format (8+320)x(8+224+8) (eights for borders)\r
extern unsigned short *PicoCramHigh; // pointer to CRAM buff (0x40 shorts), converted to native device color (works only with 16bit for now)\r
extern void (*PicoPrepareCram)();    // prepares PicoCramHigh for renderer to use\r
\r
// pico.c (32x)\r
// multipliers against 68k clock\r
extern int p32x_msh2_multiplier;\r
extern int p32x_ssh2_multiplier;\r
#define SH2_MULTI_SHIFT 10\r
#define MSH2_MULTI_DEFAULT ((1 << SH2_MULTI_SHIFT) * 21 / 10)\r
#define SSH2_MULTI_DEFAULT ((1 << SH2_MULTI_SHIFT) * 3 / 2)\r
\r
// 32x/draw.c\r
void PicoDraw32xSetFrameMode(int is_on, int only_32x);\r
\r
// sound.c\r
extern int PsndRate,PsndLen;\r
extern short *PsndOut;\r
extern void (*PsndMix_32_to_16l)(short *dest, int *src, int count);\r
void PsndRerate(int preserve_state);\r
\r
// media.c\r
enum media_type_e {\r
  PM_BAD_DETECT = -1,\r
  PM_ERROR = -2,\r
  PM_BAD_CD = -3,\r
  PM_BAD_CD_NO_BIOS = -4,\r
  PM_MD_CART = 1,	/* also 32x */\r
  PM_MARK3,\r
  PM_CD,\r
};\r
enum media_type_e PicoLoadMedia(const char *filename,\r
  const char *carthw_cfg_fname,\r
  const char *(*get_bios_filename)(int *region, const char *cd_fname),\r
  void (*do_region_override)(const char *media_filename));\r
int PicoCdCheck(const char *fname_in, int *pregion);\r
\r
extern unsigned char media_id_header[0x100];\r
\r
#ifdef __cplusplus\r
} // End of extern "C"\r
#endif\r
\r
#endif // PICO_H\r